How to remove multiple widgets at once in flutter while working on vs code?
I know what you're talking about, but in VS Code you can only delete one widget at a time.
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Hello I'm editing someone codes in Flutter using VS code, how can I easily find on what on I am running on my emulator. for example i am showing log in screen in the emulator. how can I know what filename did I need to edit.
as of now I am trying to check one by one of the codes. I tried to use widget tree but it is now updating
You can use the widget tree field in flutter devtool. Navigate to the desired page in the emulator and click the refresh button at the top right. The running widget stack will be listed by class names.
You can even detect a specific widget on the page using the "Choose widget mode" button.
Install and run DevTools from VS Code
I am just learning flutter and I am wondering if it is possible to change the properties of a widget from the code.
I am familiar with WPF, where I can just access the Elements by a name that is given to them (e.g. "btnIncreaseCounter") and then say btnIncreaseCounter.Background = Colors.Orange.
Does a similar concept exist in Flutter? Or how do I modify my widgets from the code?a
You can do it in flutter using key of particular widget,
but flutter is not designed to code this way, flutter provides you with much easy and best practices to achieve the same.
Is there any way to serialize the Build layout of a stateless flutter widget and save it to a database?
I would like to design many simple Badge widgets and don‘t want to update the App each Time I have a new one.
I would like to save new widgets to a db instead.
Remote flutter widgets - may be the direction. It has mechanism for rendering widgets based on declarative UI descriptions that can be obtained & rendered at runtime.
I have two questions with and "if" regarding the first question. As the title says I know it's better to have one MaterialApp in an App in Flutter and making Scaffold widgets for screens. But in a situation like this App which I followed for learning purposes and it's really written well and very clean. but it uses "TabBarView" as a default home for the entire app. So if I want to add another screen like "LoginSreen" that's not part of the "TabBarView" it's not inheriting the "MaterialApp" widget features. So I have to add a "MaterialApp" widget independently for that screen.
So the question is, is it ok to have two "MaterialApp" widgets in a situation like this?
if yes does it affect any variables that's shared among the screens like "SharedPreference"? or what does it affect?
If it's a bad behavior to have two "MaterialApp" widgets to in an App, Then how can you get rid of the "NavScreen()" and implement the TabBarView in the screens, Because I have tried many ways and looked at many of open source projects like this they have "TabBarView" widget as the body and start of the project.
yes you can definitely have two mat apps. but its not recommended.
Code source
Is there any trick to know that a widget has been rebuilt?
As a demonstration, i.e. if we randomly colored the widgets on every rebuild, it would look like this:
Flutter actually has built-in functionality for exactly what you are trying to achieve in the DevTools inspector:
This is called the Repaint Rainbow and it can be enabled in Android Studio, i.e. IntelliJ, as demonstrated above or directly in Dart DevTools:
Repaint Rainbow
Shows rotating colors on layers when repainting.
From the linked article
Notes
There can be many reasons for repaints and seeing a widget rebuild does not inherently mean that you triggered the rebuild as it can also come from somewhere else in the tree.
You cannot know if a widget has been rebuilt in code because that is against how the framework works - you can obviously catch any build or paint calls by integrating that into your build or paint function, but you should really not do that because builds and paints should be idempotent.
If you use android studio you can open Flutter Performance and checked Track widgets rebuild in Widget rebuild stats
Every time the widgets are rebuild ,the build() is called So You can write a print() in your build() and track when the widgets are getting rebuilt
You can't know it, and should not build a word around to obtain that value yourself either.
This is anti pattern, as the number of times a widget rebuilt should never have an impact on the output.